package com.type.strings;

/**
 * security under thread by using StringBuffer
 * @author one
 *
 */
public class string2StringBuffer  {
	public static void main(String[]args){
		StringBuffer sb=new StringBuffer();
		sb.append("[");
		sb.append("StringBuffer");
		sb.append("]");
		System.out.println(sb);
		sb.insert(1,"helloworld,");
		System.out.println(sb);
	}

}
